Cleanup: use the local variable (#20767)

Signed-off-by: huanggze <loganhuang@yunify.com>

pkg/api/http_server.go

@@ -285,7 +285,7 @@ func (hs *HTTPServer) addMiddlewaresAndStaticRoutes() {
 	for _, route := range plugins.StaticRoutes {
 		pluginRoute := path.Join("/public/plugins/", route.PluginId)
 		hs.log.Debug("Plugins: Adding route", "route", pluginRoute, "dir", route.Directory)
-		hs.mapStatic(hs.macaron, route.Directory, "", pluginRoute)
+		hs.mapStatic(m, route.Directory, "", pluginRoute)
 	}
 
 	hs.mapStatic(m, setting.StaticRootPath, "build", "public/build")